Hi Jcl,

I need to check if a handle is valid (for some kind of garbage collection).

Therefore I currently use "ptr_for_handle" and check the return value. If it is NULL I assume that the handle was invalid.

The code works fine, but when I set warn_level >= 2 I get a warn message from the engine (as stated in the manuel).

Is there any better way to check for a valid handle so that I can use warn_level >=2 ???

Regards,
Pegamode.

1) check if the type of the handle is destroyed (see: "The handle is stored in the first 4 bytes of an engine object. It consists of a unique index number plus an object type identifier in the high byte, taken from the following table . The handle can be used to identify the type of the object. For converting the handle to a var that contains the index number, right shift it by 24, then left shift the resulting int by 10. The identifiers are defined in atypes.h" http://www.conitec.net/beta/ain-handle.htm)

2) If the type is valid iterate over the given type via ptr_first and c_link.next ( http://www.conitec.net/beta/aptr_first.htm ), and search for the given handle.

This will allow you the use of a "silent" ptr_for_handle..

Thanks for the answer ... I did step 1) already in another part of my code, so I can reuse the function. Unfortunately I forgot that I did it this way some months ago :-)